A New Fluidics Method to Determine Minimum Miscibility Pressure

Ungar, Frode; Ahitan, Sourabh; Yang, Tao; Worthing, Shawn; Abedini, Ali; Uleberg, Knut

doi:10.3997/2214-4609.202133028

Cited by 3 publications

(2 citation statements)

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“…Minimum miscible pressure (MMP) is an important parameter to determine whether miscible in formation, which refers to the minimum pressure required by injected gas to oil and eliminate interfacial tension for a given crude oil and reservoir temperature [35]. Recover factor, % 69.1 78.6 85.5 92.5 95.9 97.9…”

Section: Miscible Abilitymentioning

confidence: 99%

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Yu¹,

Sun²,

Tang³

et al. 2023

Preprint

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During the production process of complex fault block reservoirs with low permeability, the systematic research on the combination of oil displacement and storage is fuzzy. This work aims at oil displacement and storage to supplement formation energy and evaluate storage potential. Firstly, the optimal development scheme is designed by layer division and miscible and ability. Secondly, based on large amounts of field data, the novel FAHP evaluation system for CO2 storage site selection is established. Thirdly, since judging adaptability evaluation is suitable, the carbon storage simulation is conducted to contain mineralization, dissolved and structural mechanisms. The results indicate that after 1.2HCPV CO 2 injected cumulatively into reservoir, the cumulative oil increase reached 4001.80×10 4 m 3 and the final recovery rate was 44.46%, achieving a good effect. At the stage of injection, the CO2 capacity remaining in the reservoir was nearly 1657.53×10 4 t and the gas storage rate reached 43.84%. The novel evaluation system for CO 2 storage site selection shows that the target reservoir has more storage space, large injection capacity, high safety factor and low storage cost, which is allowed to storage. At the stage of storage, the effective storage capacity of target reservoir was 2257.48×10 4 t, of which the structural storage capacity was 73.43% and the mineral storage capacity was the least (3.46%). The average annual CO 2 storage capacity is about 225.74×10 4 t, which is equivalent to planting 2031.69×10 4 t trees or shutting down 135.69×10 4 cars for one year, achieving oil displacement/storage synergetic optimization. The findings of this study can offer engineers guidance for ensuring the long-term, stable and safe operation of CO 2 storage. For complex fault block reservoirs with low permeability "green, low-carbon, efficient" development has a certain reference.

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Section: Miscible Abilitymentioning

confidence: 99%

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Yu¹,

Sun²,

Tang³

et al. 2023

Preprint

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“…Existing microfluidic and nanofluidic toolsin industry and academiaare well suited to these challenges and can address concerns of both the public and operators regarding the transport, reactivity, and ultimate safety of injected/stored CO 2 . ,− Most notably, the recent commercialized microfluidic platform to measure the MMP can lower the threshold to obtain on-demand relevant data to improve the field operations’ efficiency and impact the decision-making on CO 2 -EOR planning. , However, these tools require some additional development. Specifically with regard to temperature and pressure, CO 2 -based enhanced oil recovery and sequestration operations typically implement in geological formations with high pressure and temperature (∼100 MPa and 200 °C).…”

Section: The Future: Microfluidic Fluid Analysis In the Energy Transi...mentioning

confidence: 99%

Past, Present, and Future of Microfluidic Fluid Analysis in the Energy Industry

Abedini¹,

Ahitan²,

Barikbin³

et al. 2022

Energy Fuels

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Microfluidics presents an unprecedented opportunity to understand fluid properties and phase measurements at extreme conditions relevant to energy applications. Since the 1950s, when a simple micromodel system was built to visualize fluid behavior in porous media, microfluidics has matured and has been adapted to help address the biggest fluid challenges within the energy industry. Modern microfluidic systems are robust at high temperatures and pressures and can provide phase property analyses competitive with the most established bulk methods. In contrast to bulk methods, microfluidic approaches offer advantages in speed, cost, control, and sample size. Here, we review and highlight the past and present of microfluidic-based fluid analysis and look ahead to future applications and the opportunity presented by the energy sector transition ahead.

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Large-Scale High-Throughput Sensitivity Analysis of CO2 MMP to Optimize Gas Injection EOR Processes

Abedini,

Qi,

Haas

et al. 2023

Day 3 Wed, October 04, 2023

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Performance of CO2 injection relies on accurate CO2 MMP/miscibility data at reservoir conditions. The CO2 stream typically contains gas impurities, and in most cases CO2 is combined with recycled gasses, which in either case the MMP changes – imposing additional uncertainties to deviate from expected CO2-MMP. Slim-tube is the most reliable tool; however, it is very time- and capital-intensive, making it impossible to provide high-throughput data to assess the impact of other gasses. Throughout a case study, we present a very efficient microfluidic platform to measure high-quality MMP data of CO2 with various impurities significantly faster and easier. In this work, a microfluidic platform was designed and used to determine the MMP/miscibility condition of CO2 in pure state and with several impurities (i.e., hydrocarbon mixtures, CH4, H2S, H2, N2, Ar) for an EOR operation in a depleted reservoir. 18 miscibility tests were conducted over ∼4 weeks to provide detailed data on how the MMP or miscibility of CO2 changes due to gas impurities – possibly the largest and fastest empirical study of MMP sensitivity ever. A high-resolution fluorescence microscopy along with an automated image analysis algorithm were employed to assess the miscibility condition. The MMP of a few gasses were also measured using the slim-tube to verify the validity of the microfluidic measurements, showing a tight agreement between the data. The results have demonstrated a reliable, accurate, and quick method to conduct a thorough CO2-MMP sensitivity analysis for gas injection processes. While each impurity may have a clear impact on the MMP, either in an increasing or decreasing manner, the interconnection between multiple impurities is generally unknown and differs as a function of impurity composition and reservoir conditions. The outcome of this work, eventually, gave a roadmap to provide a boundary of a miscible zone, in which the level of impurities is acceptable and not adversely affecting miscibility performance of injection, and while beyond this boundary, the impurities may negatively impact the recovery from performance of gas injection by increasing the MMP above the current reservoir pressure. Given the very small volume of oil sample, easier operations, and faster run-time required for this microfluidic approach, the miscibility/MMP study of a testing oil with various gas compositions can be determined in days – not obtainable with the slim-tube approach. The microfluidic platform utilized here provides accurate and quick gas injection related miscibility information, that can potentially open a new opportunity to better develop the current resources, improve the production efficacy, and mitigate uncertainties associated with gas injection plannings and operations. The benefits can be further extended for facility design, regulatory requirements, land acquisition strategy, workflow modifications, and reserve estimates.

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A New Fluidics Method to Determine Minimum Miscibility Pressure

Cited by 3 publications

References 0 publications

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Integrated CO2 Miscible Flooding-Storage Technologies for Complex Fault Block Reservoirs with Low Permeability

Past, Present, and Future of Microfluidic Fluid Analysis in the Energy Industry

Large-Scale High-Throughput Sensitivity Analysis of CO2 MMP to Optimize Gas Injection EOR Processes

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